Year Years
1950 41.21
1951 41.353
1952 41.622
1953 41.862
1954 42.073
1955 42.255
1956 42.413
1957 42.55
1958 42.673
1959 42.795
1960 42.932
1961 43.093
1962 43.284
1963 43.497
1964 43.708
1965 43.934
1966 44.202
1967 44.466
1968 44.632
1969 44.58
1970 43.936
1971 42.262
1972 39.456
1973 35.674
1974 31.262
1975 26.991
1976 23.806
1977 22.394
1978 23.113
1979 25.944
1980 30.491
1981 36.036
1982 41.618
1983 46.461
1984 50.213
1985 52.722
1986 54.102
1987 54.822
1988 55.281
1989 55.616
1990 55.922
1991 56.237
1992 56.533
1993 56.804
1994 57.093
1995 57.446
1996 57.895
1997 58.439
1998 59.076
1999 59.805
2000 60.624
2001 61.525
2002 62.477
2003 63.444
2004 64.4
2005 65.312
2006 66.15
2007 66.904
2008 67.569
2009 68.145
2010 68.638
2011 69.065
2012 69.453
2013 69.827
2014 70.196
2015 70.57
2016 70.949
2017 71.324
2018 71.69
2019 72.046
2020 72.393
2021 72.73
2022 73.057
2023 73.375
2024 73.684
2025 73.984
2026 74.276
2027 74.558
2028 74.833
2029 75.1
2030 75.359
2031 75.611
2032 75.855
2033 76.093
2034 76.325
2035 76.552
2036 76.773
2037 76.989
2038 77.2
2039 77.408
2040 77.611
2041 77.811
2042 78.007
2043 78.199
2044 78.388
2045 78.574
2046 78.756
2047 78.935
2048 79.111
2049 79.283
2050 79.453
2051 79.618
2052 79.78
2053 79.939
2054 80.095
2055 80.248
2056 80.4
2057 80.55
2058 80.699
2059 80.848
2060 80.996
2061 81.142
2062 81.287
2063 81.43
2064 81.571
2065 81.71
2066 81.848
2067 81.985
2068 82.122
2069 82.258
2070 82.394
2071 82.529
2072 82.663
2073 82.796
2074 82.926
2075 83.055
2076 83.183
2077 83.308
2078 83.433
2079 83.556
2080 83.678
2081 83.8
2082 83.921
2083 84.042
2084 84.162
2085 84.282
2086 84.402
2087 84.521
2088 84.639
2089 84.756
2090 84.872
2091 84.988
2092 85.103
2093 85.218
2094 85.332
2095 85.447
2096 85.56
2097 85.674
2098 85.787
2099 85.9